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IMPACT ASSESSMENT

Discussion:

A remote user can create a specially crafted file that, when loaded by the target user, will execute arbitrary code on the target system. The code will run with the privileges of the target user.A specially crafted RIFF WAV file can trigger an integer overflow [CVE-2011-0209].Specially crafted sample tables in a QuickTime movie file can cause code execution [CVE-2011-0210].A specially crafted movie file can trigger an integer overflow [CVE-2011-0211].A specially crafted JPEG file can trigger a buffer overflow [CVE-2011-0213].

Impact:

A remote user can create a file that, when loaded by the target user, will execute arbitrary code on the target user's system.

Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution.An input validation issue exists in the QuickTime ActiveX control. An optional parameter '_Marshaled_pUnk' may be passed to the ActiveX control to specify an arbitrary integer that is later treated as a pointer. Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution. This issue is addressed by ignoring the '_Marshaled_pUnk' parameter. This issue does not affect Mac OS X systems.

Viewing an image in a maliciously prepared directory may lead to arbitrary code execution.A path searching issue exists in QuickTime Picture Viewer. If an attacker places a maliciously crafted DLL in the same directory as an image file, opening the image file with QuickTime Picture Viewer may lead to arbitrary code execution. This issue is addressed by removing the current working directory from the DLL search path. This issue does not affect Mac OS X systems.

Solution:

The vendor has issued a fix as part of Mac OS X v10.6.8 and Security Update 2011-004, available from the Software Update pane in System Preferences.The Software Update utility will present the update that applies to your system configuration. Only one is needed, either Security Update 2011-004 or Mac OS X v10.6.8.